Bump octokit from 3.1.1 to 3.1.2 (#288)

Bumps [octokit](https://github.com/octokit/octokit.js) from 3.1.1 to 3.1.2.
- [Release notes](https://github.com/octokit/octokit.js/releases)
- [Commits](octokit/octokit.js@v3.1.1...v3.1.2)

---
updated-dependencies:
- dependency-name: octokit
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>